外文翻译--冷冲模具使用寿命的影响及对策.doc

DieLifeofcoldstampingdieandimprovementsOverviewofstampingdieStampingDie-Stampinginthecold,thematerial(metalornon-metallic)processingintoparts(orhalf)ofaspecialtechnicalequipment,calledcoldstampingdie(commonlyknownasDie).Press-isatroomtemperature,usingthedieinstalledinthepresstoputpressureonthematerialtoproduceaseparationorplasticdeformation,andthustoobtainthenecessarypartsofapressureprocessingmethod.Stampingdieintheformofmany,thegeneralcategoriesaccordingtothefollowingmainfeatures:1.Accordingtothetechnicalnatureof(1)Diealongtheclosedoropencontourthematerialarederivedfrommold.Ifblankingdie,punchdie,cutoffthemold,cutmode,cuttingmode,splitmode,etc.(2)bendingmodetoblankorblanksheetalongastraightline(curvedline)tobend,deform,andthusobtainacertainangleandshapeoftheworkpieceinthemold.(3)Thedrawingdieismadeoftheblanksheetopeninghollow,orhollowpiecesoffurtherchangestotheshapeandsizeofthemold.(4)Dieroughorsemi-finishedworkpieceisconvexaccordingtoplan,directcopytheshapeofthedieshape,thematerialitself,generateonlylocalplasticdeformationofthemold.Suchasthebulgingmode,reducingthedie,expansiondie,formingdierolling,flangingmold,plasticmold.2.Accordingtothedegreeclassificationprocesscombination(1)singleprocessmodelinapresstour,justcompletedadiestampingprocess.(2)compositemodelisonlyonestation,inapresstour,atthesamestationatthesametimetocompletemorethantwoortwodiestampingprocess.(3)ProgressiveDie(alsoknownasthemodulusofcontinuity)inthefeedingdirection,rough,withtwoormoreofthestation,atthepressofavisit,workindifferentplacesonthecompletionoftwoortwosuccessiveRoadoverstampingdieprocess.ChongcalledcoldstampingdieDie-wide.Coldstampingdieisusedincoldstampingdiemoldindustry,andaccessoriesrequiredforhigh-performancestructuralceramicmaterials,preparationmethods,high-performanceceramicmaterials,moldsandaccessoriesfromthezirconiumoxideandyttriumaluminumpowderincreases,Prelementcomposition,Preparationisthesolutionofzirconia,yttriasolution,praseodymiumoxidesolution,accordingtoacertainpercentageofaluminasolutionwhenmixedliquor,ammoniumbicarbonateinfusion,byco-precipitationsynthesisofceramicmaterials,moldsandaccessoriesneededforrawmaterials,reactionprecipitategeneratedbythetreatment,drying,calciningandaccessoriesbyhighperformanceceramicmoldmaterialsuperfinepowder,andthenafterforming,sintering,finishing,theywillhavehigh-performanceceramicmaterials,moldsandaccessories.Advantagesofthisinventionistheinventionmadeofcoldstampingdiesandpartsandlongservicelife,theprocessdoesnotappearinthepressanditspartsandstampingdiebondgeneratedthephenomenonofstampingsurfaceissmooth,noglitches,canreplacetraditionalhigh-speedsteel,tungstensteel.DiewiththemainpartsDiestampingtoolsisthemainprocessequipment,stampingrelyontherelativemovementunderthemoldcompleted.Processingtimebecausetheupperandlowermoldbetweentheconstantdivisionand,ifcontinuedoperationofthefingersofworkerstoenterorremaininthemoldclosed,therewillcertainlyposeaseriousthreattotheirpersonalsafety.(A)ofthemoldmainparts,functionandsafetyrequirements1.Workingpartsisadirectpunchtoblankformingtheworkingparts,therefore,itisthekeytomoldparts.Punchnotonlysophisticatedandcomplex,itshouldmeetthefollowingrequirements:(1)beofsufficientstrength,cannotbebrokenordestroyedduringstamping.(2)shouldbeappropriatetoitsmaterialandheattreatmentrequirements,topreventtoohighhardnessandbrittlefracture.2.Positioningpartspositioningpartistodeterminethelocationofthepartsinstalledblank,therearepins(board),gaugepin(plate),leadissold,guideplate,knifesetfromtheside,sidepressureetc.Designshouldbeconsideredwhenpositioningpartseasytooperateandshouldnothavehadorientation,locationtofacilitateobservation,preferablyintheforwardposition,contouringtocorrectthepinlocationandpositioning.3.Binder,unloadinganddischargingpartsbindercomponentsareblankholder,binderboard.Blankholderpressurecandrawingblankholderforce,therebypreventingbilletsundertheactionofthetangentialpressurearchformedfolds.Theroleofpressureplatetopreventmovementandbounceblank.Topofthedevice,dischargeboardsroleistofacilitatethepiecesandcleanupwaste.Thembythespring,rubberandequipment,puttingontheair-cushionsupport,canmoveupanddown,knockingoutpiecesofthedesignshouldhaveenoughtopoutput,movementtothelimitedspaces.Stripperplateareashouldbeminimizedorclosedpositionintheoperatinggroovemillingoutempty-handed.Exposureofthestripperplateshouldhaveprotectionaroundtheplate,topreventfingerinsertedintoorforeignobjectsinside,exposedsurfaceedgesshouldbebluntdown.4.Guidepartsandguidesleeveguidepinisthemostwidelyusedpartofaguide.Itsroleistoensurepunchthepunchingclearancewhenaccuratematch.Therefore,theguideposts,guidecoverthegapshouldbelessthantheblankingclearance.GuidePostlocatednextmoldbase,toensurethatthestrokebottomdeadcenter,theleadcolumninthetemplateonthefaceoverthetopforatleast5to10mm.Guidecolumnsshouldbearrangedfarawayfromthemoduleandthepressureplateinthearea,sotheoperatorsarmsdonotgettotakeovertheleadcolumnmaterial.5.Supportingandclampingtheupperandlowerpartswhichincludestemplates,diehandle,fixedplatepunch,plate,stopper,etc.lthoughChinaDiewiththeindustryoverthepastdecadehasmaderemarkabledevelopment,butinmanywayscomparedwiththeindustrializedcountriesthereisstillalargegap.Forexample,theprecisionmachiningequipment,processingequipmentinDiewiththerelativelylowproportion；CAD/CAE/CAMtechnologypenetrationisnothigh；manyadvancedmoldtechnologynotwidelyso,resultinginaconsiderablenumberoflarge,sophisticated,complexandlongDielifewithdependenceonimports.Withthecontinuousprogressofscienceandtechnology,modernindustrialproductionofincreasinglycomplexanddiverse,productperformanceandqualityiseverincreasing,thusthecoldstampingtechnologyputforwardhigherrequirements.Inordertoadapttothecoldstampingtechnologyindustryneeds,coldstampingtechnologyitselfalsoininnovationanddevelopment.coldstampingtechnologyideaistoimproveandexpandasmuchaspossibletheadvantagesofthecoldstampingprocess,hecoldstampingtechnologydevelopment,shouldnotethefollowingaspects:(1)coldstampingtechnologyprocessparametersshouldbeproperlyidentifiedandDiewiththeworkofsomeoftheshapeandsize,toimprovethequalityofstampingpartsandshortenthenewproductproductioncycleshouldbeinstrengtheningthemetalformingthebasisoftheoreticalstudies,tometalformingtheorytopracticecanproduceadirection,andgraduallyestablishacloseconnectionwiththeactualproductionoftheadvancedprocessofcalculation.abroadhavebeguntouseplasticfiniteelementmethod,automobilepartsformingprocessofthestressandstrainanalysisandcomputersimulationtopredicttheformingpartofaprocessplanonthepossibilitiesandpotentialproblems.(2)toaccelerateproductreplacement,molddesigntoovercometheshortcomingsofalongcycle.Shouldvigorouslycarryoutcomputer-aideddesignandmanufactureofmolds(CAD/CAM)Research.Inmycountry,payingparticularattentiontostrengtheningthemulti-positionprogressivedieCAD/CAMTechnology.(3)tomeettheneedsofmassproduction,andreducelaborintensity.Shouldstrengthencoldstampingofmechanizedandautomated,sothattheaverage,smallpiecesofhigh-speedpressesinamulti-positionprogressivedieproduction,productionreachedahighdegreeofautomationtofurtherimprovestampingproductivity.(4)expandthescopeofapplicationofcoldstampingproduction.Socoldpressingbothsuitableformassproduction,butalsoforsmallbatchproduction；boththegeneralaccuracyofproductproduction,butalsocanproduceprecisionparts.Shouldpayattentiontodevelopmentsuchasfineblanking(especiallythickmaterialfineblanking),forminghigh-energy,softmoldforming,pressureandprocessingnewsuperplasticformingprocess,butalsopromotetheeasymode(softmodeandthelowmeltingpointalloymold),UniversalHybridmodel,theuseofCNCpunchpressandotherequipment.Inaddition,theperformanceimprovementofsheetmetalstamping,moldnewmaterial,diedevelopmentofnewprocessingmethodsshouldbefurtherstrengthened.DiewithlifeandCountermeasuresDiewiththelifeoftheworkpiecebypunchingoutthenumberofterms.ManyfactorsaffectthelifeDie.Therearediestructuredesign,manufacturemoldsusedinthepunchanddiematerials,diequalityandsurfacehardeningheattreatment,precisiondiemanufacturingpartsandcoldstampingmaterialsselection.Inaddition,therearedieinstallation,adjustment,useandmaintenance.1.DieDesignonLife(1)Layoutdesignoflayoutmethodsandtaketheboundaryvalueagreatimpactonthedielife,toosmalltotaketheboundaryvalue,oftencausingrapidwearandconvexmold,diebitewoundsonthe.Startingfrommaterialsavings,taketheboundaryvaluesmallerthebetter,buttaketheedgeislessthansomevalue,thecutsurfaceofthemoldandthequalityoflifeadversely.TherewillbeleftbehindintheblankingdieQ-gapweretoproducesparepartsglitch,orevendamagethedieedge,reducedielife.Therefore,considerincreasingthematerialutilizationofthesametime,partsmustyield,qualityandlifeexpectancytodeterminethelayoutmethodsandtaketheboundary.(2)diestructurepronetostressconcentrationonthecrackingofthediestructure,compositestructurecanbeusedormosaicstructure,andprestressedstructuretoenhancethemoldlife.(3)theimpactofclearancewhenthegapistoosmall,compressedextrusionofinterest,increasedfriction,increasedwear,thewearsideofaggravateddischargeandpushpiecesafterblankingtime,materialsandconvex,thefrictionbetweendiewillcausewearandtearthantheendedgeonthesideofthegrindingmuch,butalsoeasilyleadtoconvex,concavemoldtemperatureishigh,theadsorptionofmetaldebrisinthesideedgetoformametaltumor,sothatmaleandfemalediechippingorexpansionoccurscrackphenomenon.Therefore,thegapistoosmalltoDieLifeverybad.Gapistoolargewillincreasethepunchandthediefacetheedgeoftheconcentrationofstress,resultinginasharpincreaseinstress,sobladeedgequicklyloseangularyielddeformation.Therefore,additionofblankingforce,therebyenablingfasteredgeedgewear,reducedielife.Butinordertoreducethemaleandfemalediewear,extendingmoldlife,whileensuringqualityofstampingpiecesunderthepremisethatlargerspacedesignedproperlyitisnecessary.(4)Die-orientedstru